Bol Bachchan is inspired by the gold standard of Indian comedy movies, Golmaal.

Abbas Ali (Abhishek Bachchan) stays in delhi with his sister Sania (Asin). After losing the court case for their ancestral property, they are forced to move to a village Ranakpur searching for a job. Abbas is then hired by Prithviraj Raghuvanshi (Ajay Devgan), as an officer for his property. Abbas accidentally lies in front of everybody that his name is Abhishek Bachchan.
Afraid that Prithviraj will thrash him in case he knows the truth, Abbas keeps quiet and tries to cover one lie with another and so on. One day, Abbas gets caught when is offering namaaz. To coverup, Abbas spreads around the lie of having a second, look-alike brother. Prithviraj believes in Abbas and also starts falling in love with Sania. Prithviraj’s sister, Radhika (Prachi Desai), falls in love with Abbas.

What happens when the truth surfaces in this comedy-of-errors? Do Abbas-Radhika and Prithviraj-Sania make it? Watch the film to find out.